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A274178 as a simple table

na(n)
121
225
328
432
533
637
738
842
945
1051
1152
1253
1359
1460
1566
1669
1773
1877
1981
2083
2184
2289
2390
2491
2596
2698
27101
28105
29107
30109

[21,25,28,32,33,37,38,42,45,51,52,53,59,60,66,69,
 73,77,81,83,84,89,90,91,96,98,101,105,107,109]